Ligumia recta (Lamarck,1819)Black s

Ligumia recta (Lamarck,1819)
Black sandshell

รูปหอย......................................

Ligumia recta , INHS 11769 and 11722. Mississippi River, Rock Island County , Illinois.
Length : 4.6 inches (11.7 cm) for male (top), 4.8 inches (12.2cm) for female (bottom).
Other common names Black sand mussel, long John ,honest John, sow’s ear , lady’s slipper.
Key charakters Elongate shell , pointed on the posterior end, smooth surface, usually dark brown to black, with a pinkish or purple nacre.
Similar species Spike, spectaclecase, yellow sandshell.
Description Shell elongate , solid , and moderately compressed. Anterior end rounded, posterior end pointed in males, saber-shaped in females. Dorsal margin straight, ventral margin straight to curved. Umbos low, only slightly elevated above the hinge line. Beak sculture, if visible, of two or three indistinct, double-looped bars. Shell smooth and shiny, dark green , brown, or black, with green rays visible on some individuals. Length to 8 inches (20.3 cm).
Pseudocardinal teeth triangular, serrated, and divergent; two in the left valve, one in the right, occasionally with a small tooth anteriorly. Lateral teeth long , moderately thin , and straight. Beak cavity shallow. Nacre variable from white , ping , and salmon to deep purple , iridescent posteriorly.

ผลลัพธ์ (แอฟริกา) 1:

Ligumia recta (Lamarck, 1819).
Swart sandshell se dop ...................................... Ligumia recta, INHS 11769 en 11722. Mississippi. rivier, Rock Island County, Illinois. Duur:. 4.6 duim (11,7 cm) vir manlike (bo), 4,8 duim (12.2cm) vir vroulike (onder) Ander algemene name Black Sand Mossel, lang John, eerlike John, Saai se oor ,. Lady se Slipper. Sleutel Charakters verleng Shell, wys op die posterior End, gladde oppervlak, gewoonlik donkerbruin tot swart, met 'n pienk of pers nacre. Soortgelyke spesies Spike, Spectaclecase, Geel Sandshell. Beskrywing Shell verleng, Solid, en matig saamgeperste. Anterior. eindig afgerond, posterior einde uitgewys in mans, saber-vorm in vroue. Dorsale marge reguit, ventrale marge reguit na geboë. Umbos laag is, net 'n bietjie verhewe bo die skarnier lyn. Bek Skulpturen, as sigbare, van twee of drie onduidelik, dubbel. haak Drinkplekke Shell glad en blink, donkergroen, bruin of swart, met Green strale sigbaar op sommige individue Duur tot 8 duim (20,3 cm)... Pseudocardinal tande driehoekige, getande en uiteenlopende; twee in die linker Valve, een in. die reg, soms met 'n klein tand anterior. Laterale tande lang, matig dun, en reguit. Bek holte vlak. nacre veranderlike van wit, tafeltennis, en salm te diep pers, glansende posterior.